/*
 * Licensed to Crate.io GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate licenses
 * this file to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.statistics;

import java.util.Collection;

import io.crate.types.DataType;

public final class StatsUtils {

    private StatsUtils() {}

    public static <T> ColumnStats<T> statsFromValues(DataType<T> dataType, Collection<T> values) {
        ColumnSketchBuilder<T> builder = dataType.columnStatsSupport().sketchBuilder();
        builder.addAll(values);
        return builder.toStats();
    }

    public static <T> ColumnStats<T> statsFromValues(DataType<T> dataType, Collection<T> values, int nullCount) {
        ColumnSketchBuilder<T> builder = dataType.columnStatsSupport().sketchBuilder();
        builder.addAll(values);
        for (int i = 0; i < nullCount; i++) {
            builder.add(null);
        }
        return builder.toStats();
    }
}
